364 BRAINS OF RATS AND MEN 



But without straying from the biological field we have 

 reached a conclusion which is measurably satisfying 

 and quite adequate for the cultivation of this field. 

 We have integrated our living — all of it — as biological 

 process. We can now accept the dictum laid down by 

 Dewey (1925): "We must conceive the world in 

 terms that make it possible for devotion, piety, love, 

 beauty, and mystery to be as real as anything else." 

 That is a great gain. For now the process of living in 

 its entirety is approachable by the scientific method 

 and is under control by natural procedures just in pro- 

 portion as the laws of these vital processes are under- 

 stood.' 



Without transgressing the boundaries of biological 

 science we can set in their places objective behavior in 

 all of its manifestations, the structural mechanisms 

 employed, and all kinds of subjective experience — 

 affect, impulse, volition, the whole intellectual life, 

 and, as soon as we consciously socialize these things, 

 the whole moral life. So far from disregarding these 

 intimate personal experiences, we rationalize and in- 

 terpret them by articulating them with the rest of liv- 

 ing and so have a wider and truer understanding of 

 what living on the human plane really is — physiolo- 



* Natural science employs only its own distinctive technique; it 

 envisages a limited horizon; it does not and cannot attain universals or 

 metaphysical absolutes. Cf. Santayana (Jour. Philos., vol. 22 [1925], 

 p. 674): "Naturalism may, accordingly, find room for every sort of psy- 

 chology, poetry, logic and theology if only they are content with their 

 natural places." 



